Trend Micro - Security Intelligence
We recently came across a cyber attack that used a remote access Trojan (RAT) called Lost Door, a tool currently offered on social media sites. What also struck us the most about this RAT (detected as BKDR_LODORAT.A) is how it abuses the Port Forward feature in routers. Using this feature enables remote systems to connect to a specific computer or service within a private local-area network (LAN). However, when used maliciously, this feature allows remote attackers to mask their activities in the network and avoid immediate detection. Because this RAT is easy to customize, even knowledge of the indicators of compromise (which may change as a result) may not be sufficient in thwarting the threat. Easily customizable RATs like Lost Door can be hard to detect and protect against, posing a challenge to IT administrators.
Its maker, “OussamiO,” even has his own Facebook page where details on his creation can be found. He also has a dedicated blog (hxxp://lost-door[.]blogspot[.]com/) where tutorial videos and instructions on using the RAT is found. Any cybercriminal or threat actor can purchase and use the RAT to launch attacks.
Post from: Trendlabs Security Intelligence Blog - by Trend Micro
Lost Door RAT: Accessible, Customizable Attack Tool